Milk cover cleansing lotion, cleansing towel and preparation method

Abstract

The invention discloses a milk cover cleansing lotion which comprises the following components in percentage by weight: 10-60% of grease, 0.2-3.0% of an emulsifier, 3.0-15% of a humectant, 1.0-10% of a skin conditioner, 0.2-0.5% of an antioxidant and the balance of water, and the emulsifier adopts polyglycerol-10 laurate or olive oil PEG-7 esters; the mass ratio of the emulsifier to the grease is (1: 20)-(1: 60). The makeup remover with the milk cover can efficiently take away makeup and has attractiveness and functionality; excellent stability, heat resistance and cold resistance are realized; the skin feeling is free of burden, and is suitable for outdoor washing-free scenes; the formula is simple and safe, and is milder than conventional makeup removing products. After being shaken up, the emulsion is uniform and is matched with the membrane cloth for use, so that the portability and the makeup removal convenience are further improved. The invention further discloses a preparation method of the milk cover cleansing lotion, a milk cover cleansing towel and a preparation method of the milk cover cleansing towel.

Description

Technical Field

[0001] The present invention relates to a milk cap makeup remover, makeup remover wipes and a preparation method thereof. Background Art

[0002] Sports is closely related to skin health and can help the skin metabolism stay in good condition. People's attention to sports is increasing day by day, and the skin care needs in sports scenarios follow. Wearing makeup during sports has become a trend, and timely cleaning and makeup removal after sports is very important for skin health; in outdoor scenarios, sufficient clean water is often not available, and there is a greater need for makeup removers that are waterless, leave no residue after makeup removal and are safe. Dosage forms such as makeup remover oils, water-oil double-layer makeup removers, makeup remover lotions and makeup remover creams have high makeup removal efficiency, but are prone to residual oil or emulsifiers, and most require secondary cleaning. The milk cap makeup remover is an innovative dosage form with a makeup remover lotion on the upper layer and a makeup remover water on the lower layer. Compared with general emulsified dosage forms, such dosage forms add a small amount of surfactants to ensure the safety of the product, and can also carry an appropriate amount of light-textured oils to dissolve makeup. The emulsified oils float to make the liquid separate into two layers, resulting in an interesting appearance.

[0003] However, the currently reported milk cap makeup removers cannot meet the above requirements. Several milk cap makeup removers on the market have a lot of residual oil after makeup removal, with a greasy feel and require secondary cleaning; although product A on the market has a refreshing feel, it has strong eye irritation (see later) and is very prone to demulsification.

[0004] Patent CN202111556745.2 reported a milk cap makeup remover product. For a refreshing skin feel experience, cyclopentasiloxane, cyclohexasiloxane and dicaprylyl carbonate were added. However, cyclopentasiloxane and cyclohexasiloxane were identified as substances of very high concern by the European Union in 2018 due to their high persistence and bioaccumulation, and were further restricted in the use in cosmetics in the Regulation (EC) No 1907 / 2006 (REACH) on 16 May 2024. Dicaprylyl carbonate is generally considered safe, but may be irritating to the skin, eyes and respiratory system in some cases. In addition, this patent carried out a 24-hour stability investigation experiment, but did not carry out long-term stability investigation or accelerated stability investigation experiments, and could not reflect the shelf-life stability of the product.

[0005] To obtain a stable milk cap dosage form, it is not enough to simply match oils and emulsifiers from the perspectives of makeup removal ability and skin feel. What needs to be considered more is the compatibility of oils and emulsifiers to ensure the stability of the product, while taking safety into account. In this patent, oils with high safety and light texture are used, and at the same time, through experiments, a combination of surfactants and oils with good compatibility and capable of forming a stable emulsion is selected, and a milk cap makeup remover with strong makeup removal ability, excellent stability, safety and a refreshing skin feel is prepared. Summary of the Invention

[0006] The object of the present invention is to overcome the defects of the prior art and provide a milk cap makeup remover liquid, which leaves no residue after removal, does not require secondary cleaning, has a fresh and non-greasy skin feel, is mild and non-irritating, and has excellent stability.

[0007] Another object of the present invention is to provide a preparation method of the milk cap makeup remover liquid.

[0008] Another object of the present invention is to provide a milk cap makeup remover towel and a preparation method thereof.

[0009] One technical solution to achieve the above object is: a milk cap makeup remover liquid, which is a water-oil double-layer makeup remover liquid. The upper layer is a milky white makeup remover emulsion, and the lower layer is a makeup remover water, and the boundary between the two layers is clear. The milk cap makeup remover liquid contains the following components in weight percentage:

[0010]

[0011] The emulsifier is polyglyceryl-10 laurate or olive oil PEG-7 esters; the safety risk is lower than that of commercially available products and other patented compound emulsifiers;

[0012] The mass ratio of the emulsifier to the oil is (1:20)-(1:60).

[0013] For the above-mentioned milk cap makeup remover liquid, when the emulsifier is polyglyceryl-10 laurate, the oil is at least one of 10-50% isocetane and 10-30% squalane; when the emulsifier is olive oil PEG-7 esters, the oil is 10-30% triglyceride (ethylhexanoate).

[0014] For the above-mentioned milk cap makeup remover liquid, the moisturizer includes but is not limited to at least one of glycerin, pentylene glycol, butylene glycol, glycerol polyether-26, and betaine. Keep the skin moist and comfortable after makeup removal.

[0015] For the above-mentioned milk cap makeup remover liquid, the skin conditioner includes but is not limited to at least one of Portulaca oleracea extract, Gleditsia sinensis extract, Hedyotis diffusa extract, Robinia pseudoacacia flower extract, and seawater. Bring the effects of moisturizing, soothing, and repairing.

[0016] For the above-mentioned milk cap makeup remover liquid, the antioxidant includes but is not limited to p-hydroxyacetophenone.

[0017] The present invention also provides a preparation method of the above-mentioned milk cap makeup remover liquid, including the following steps:

[0018] S1. Add an emulsifier, a humectant, a skin conditioner and an antioxidant into water and mix them evenly to obtain a mixed solution.

[0019] S2. Homogeneously mix the mixed solution obtained in step S1 with oil and grease, let it stand until the water and oil are separated into layers, and thus obtain the milk cap makeup remover.

[0020] The present invention also provides a milk cap makeup remover wipe, which comprises a membrane cloth and the above-mentioned milk cap makeup remover loaded thereon.

[0021] The present invention also provides a preparation method of the above-mentioned milk cap makeup remover wipe, which comprises the following steps: first, prepare the milk cap makeup remover by using the above-mentioned preparation method; then shake the milk cap makeup remover until it becomes a uniform emulsion, and load it on the membrane cloth and seal it into a membrane bag to obtain the makeup remover wipe.

[0022] Adopting the technical solutions of the milk cap makeup remover, the makeup remover wipe and the preparation method of the present invention has the following beneficial effects:

[0023] (1) It can efficiently remove makeup and does not require secondary cleaning after removal, being suitable for outdoor occasions.

[0024] (2) Even in the case of a high oil and grease content, it can still achieve a refreshing skin feel.

[0025] (3) The ingenious combination of the emulsifier and the oil and grease ensures excellent stability of the milk cap, being heat-resistant and cold-resistant.

[0026] (4) The safety of this system is high, especially being safer for the relatively sensitive eyes.

[0027] (5) It is easy to add a high content of lipophilic or hydrophilic skin conditioners, and it is easier to meet the multi-functional requirements of makeup removers. Description of the Drawings

[0028] Figure 1 Appearance after standing for 24 h for Examples 1 - 5.

[0029] Figure 2 Appearance after standing for 24 h for Comparative Examples 1 - 11.

[0030] Figure 3 Appearance after centrifuging at 10000 rpm for 2 min for Examples 1 - 5, Comparative Example 2, Comparative Example 4, Comparative Example 6, Comparative Example 7, Comparative Example 10, and Comparative Example 11.

[0031] Figure 4 Makeup removal effects of Example 2 and commercially available product A. Detailed Embodiments

[0032] In order to enable those skilled in the art of the present technology to better understand the technical solutions of the present invention, the following describes its detailed embodiments in detail with reference to the accompanying drawings:

[0033] Table 1, Component and Dosage Table of Examples 1 - 5 (%)

[0034] Component Example 1 Example 2 Example 3 Example 4 Example 5 Water 68.75 48.95 59.25 48.95 68.75 Humectant 4.00 4.00 4.00 4.00 4.00 Skin conditioner 6.00 6.00 6.00 6.00 6.00 p-Hydroxyacetophenone 0.25 0.25 0.25 0.25 0.25 Polyglyceryl-10 laurate 1.00 0.80 0.50 0.80 - Olive oil PEG-7 esters - - - - 1.00 Isocetane 20.00 40.00 30.00 20.00 - Squalane - - - 20.00 - Triglycerin tri(ethylhexanoate) - - - - 20.00

[0035] Prepare the milk cap makeup remover of Examples 1 - 5 according to the formula in Table 1. The preparation method includes the following steps:

[0036] S1, Add the emulsifier, humectant, skin conditioner and antioxidant into water and mix evenly to obtain a mixed solution;

[0037] S2, Homogenize and mix the mixed solution obtained in step S1 with the oil evenly, and let it stand until the water and oil are separated, then the milk cap makeup remover is obtained.

[0038] Polyglyceryl-10 laurate and olive oil PEG-7 esters are emulsifiers; the safety risk is lower than that of commercially available products and other patented compound emulsifiers.

[0039] Isocetane, triglyceride (ethylhexanoate) and squalane are oils, avoiding low molecular weight oils that cause irritation and sticky oils.

[0040] The humectant includes but is not limited to at least one of glycerin, pentylene glycol, butylene glycol, glycerol polyether-26 and betaine. Keep the skin moist and comfortable after makeup removal. The skin conditioner includes but is not limited to at least one of extracts of Portulaca oleracea, Gleditsia sinensis, Hedyotis diffusa, flowers of Robinia pseudoacacia and seawater; bringing moisturizing, soothing and repairing effects.

[0041] Table 2, Component and Dosage Table of Comparative Examples 1 - 11 (%)

[0042]

[0043]

[0044] Prepare Comparative Examples 1 - 11 according to the formula in Table 2.

[0045] I. Emulsification Effect

[0046] 1.1 Experimental Method

[0047] Please refer to Figure 1 and Figure 2 After Examples 1 - 5 and Comparative Examples 1 - 11 are prepared, let them stand at room temperature for 24 hours.

[0048] 1.2 Experimental Phenomenon

[0049] Please refer to Figure 1, Examples 1-5 all presented the appearance of an upper emulsion and a lower aqueous solution, which is a typical milk cap dosage form.

[0050] Please refer to Figure 2 , Comparative Examples 2, 4, 6, 7, 10, and 11 formed milk caps. Compared with Example 1, Comparative Example 1 added PEG-6 caprylic / capric glycerides and the emulsification failed; compared with Comparative Example 2, Comparative Example 3 added PEG-6 caprylic / capric glycerides and an obvious oil layer appeared. PEG-6 caprylic / capric glycerides is a commonly used hydrophilic emollient ester in makeup removers, which can dissolve various oils and assist in makeup removal. However, through the above experiments, it was found that it has a negative effect on the formation of milk caps.

[0051] Compared with Example 5, Comparative Example 5 added 0.5% "PEG-20 triglyceride isostearate, tocopherol (vitamin E)" and an oil layer appeared, indicating that using a single emulsifier, olive oil PEG-7 ester, in Example 5 is more conducive to the formation of milk caps.

[0052] The emulsification of Comparative Example 8 failed, and an obvious oil layer appeared in Comparative Example 9. The emulsifiers they used, sorbitan polyether-30 tetraoleate and PEG-20 triglyceride isostearate, are commonly used emulsifiers in makeup removal products. It can be seen that the selection of emulsifiers and their combination with oils are crucial for the formation of milk caps. The emulsifiers used in Comparative Example 6 and Comparative Example 7 are the commonly used PEG-40 hydrogenated castor oil or "PEG-40 glycerol cocoate, cocoyl polyether sulfate sodium" in makeup removal products, and they can form milk caps. The emulsifiers used in Comparative Example 10 and Comparative Example 11 are polyglycerol-10 laurate or olive oil PEG-7 ester, which are the same as those in the examples, and they can form milk caps.

[0053] II. Stability Test

[0054] 2.1 Centrifugal Stability

[0055] 2.1.1 Experimental Method

[0056] Place 1.5 mL of Examples 1-5 and Comparative Examples 1-11 in centrifuge tubes respectively, and centrifuge at 10,000 rpm for 2 min, and observe whether there is an oil layer or demulsification in the samples.

[0057] 2.1.2 Experimental Results

[0058] Please refer to Figure 3 , after centrifuging at 10,000 rpm for 2 min, Comparative Examples 2, 6, 7, and 11 were completely demulsified, Comparative Example 4 was partially demulsified, and Examples 1-5 and Comparative Example 10 maintained the milk cap appearance.

[0059] 2.2 Accelerated Stability

[0060] 2.2.1 Experimental Method

[0061] Examples 1-5, Comparative Examples 2, 4, 5, 7, 10, 11 and commercially available product A were respectively placed statically at 5°C, 25°C, 49°C, and under thermal cycling (-10, 25, 49, 25°C, 24 hours for each temperature, that is, one cycle every 4 days). After 1 month, an accelerated stability test was carried out, and the results are shown in Table 3.

[0062] Commercially available product A uses Zhejiang G Makeup Net Preparation No. 2021007496, and the formula is: water, isododecane, cyclopentasiloxane, butylene glycol, PEG-6 caprylic / capric glycerides, 1,2-hexanediol, cyclohexasiloxane,

[0063] panthenol, PEG-40 hydrogenated castor oil, phenoxyethanol, chlorphenesin, disodium EDTA, allantoin, polyaminopropyl biguanide, cetrimonium bromide, caprylyl glycol, camellia (CAMELLIA JAPONICA) seed oil, honeysuckle (LONICERA JAPONICA) flower extract, camellia (CAMELLIA JAPONICA) flower extract, hydrolyzed silk and ethylhexylglycerin.

[0064] 2.2.2 Experimental results

[0065] Table 3, Accelerated stability test results of examples, comparative examples and commercially available product A:

[0066]

[0067]

[0068] According to the results in Table 3, it can be seen that: Examples 1-5 were placed statically at 5, 25, 49°C, and under thermal cycling (-10, 25, 49, 25°C, 24 hours for each temperature, that is, one cycle every 4 days). After 1 month, all were stable. Comparative Example 2 and Comparative Example 4 were demulsified under high temperature and thermal cycling conditions; Comparative Example 6 and Comparative Example 7 had an oil layer under thermal cycling; Comparative Example 10 and Comparative Example 11 were demulsified at 5°C, 49°C and under thermal cycling conditions. Commercially available product A was demulsified or had an oil layer on the 3rd day of the investigation.

[0069] Combining the results of centrifugal stability and accelerated stability tests, the stability of Examples 1-5 is the best.

[0070] III. Safety test

[0071] 3.1 Multiple skin irritation, acute eye irritation

[0072] The samples of Examples 1-5 were subjected to multiple skin irritation and acute eye irritation tests, and the results are shown in Table 4.

[0073] Table 4, Results of multiple skin irritation and acute eye irritation of Examples 1-5:

[0074] Sample number Results of multiple skin irritation Results of acute eye irritation Example 1 No irritation No irritation Example 2 No irritation No irritation Example 3 No irritation No irritation Example 4 No irritation No irritation Example 5 No irritation No irritation

[0075] According to the results in Table 4, it can be seen that the test results of multiple skin irritations and acute eye irritations in Examples 1-5 show no irritation.

[0076] 3.2 Chicken embryo chorioallantoic membrane assay

[0077] Example 2 and commercially available product A were subjected to the chicken embryo chorioallantoic membrane assay to compare safety. Before sampling, the test samples were shaken well. The data collection was all carried out using the endpoint evaluation method (ES). The results are shown in Table 5.

[0078] Table 5. ES scores of the chicken embryo chorioallantoic membrane assay for the preferred example and commercially available product A:

[0079] Sample number ES score Example 2 4 Commercially available product A 18

[0080] According to the results in Table 5, it can be seen that the score of Example 2 is much lower than that of commercially available product A, indicating that the safety of a milk cap makeup remover and makeup remover wipes product is superior to that of commercially available product A, especially the eye safety.

[0081] IV. Makeup removal ability test

[0082] 4.1 Experimental scheme

[0083] Test samples: Example 2 and commercially available product A were filled into film bags according to the mass ratio of makeup remover to full-viscose film cloth of 11:1.65, fully wetted, and then sealed. A long-lasting lip glaze was evenly applied in a 1 cm * 2 cm area on the arm. After the lip glaze dried, the makeup remover wipes were pressed with the same force and wiped the area where the lip glaze was applied the same number of times. The experimental results are shown in Figure 4 .

[0084] 4.2 Evaluation results of makeup removal ability

[0085] Please refer to Figure 4 , and the experimental results show that the makeup removal ability of Example 2 is superior to that of commercially available competitor A.

[0086] V. Consumer evaluation

[0087] 5.1 Sample preparation method

[0088] Test samples: Example 2 and commercially available product A were filled into film bags according to the mass ratio of makeup remover to full-viscose of 11:1.65, fully wetted, and then sealed.

[0089] There were 13 female evaluators, aged 24 - 44 years old, with the requirements:

[0090] (1) Having subjective initiative (interest, willingness, etc.), in good health, and non-allergic constitution;

[0091] (2) Have experience in using cosmetics and be aged between 18 and 45 years old;

[0092] (3) Basic olfactory, tactile sensitivity and accuracy;

[0093] (4) Be able to express the perception of cosmetics in language with clear thinking.

[0094] 5.2 Evaluation Results

[0095] The evaluation results are shown in Table 6.

[0096] Table 6 Consumer evaluation results of Example 2 and commercially available product A:

[0097]

[0098] According to the results in Table 6, it can be seen that: neither Example 2 nor commercially available product A is greasy, and neither of them causes skin flushing. Example 2 has better moisturizing effect, no stinging sensation, and no eye irritation; while commercially available product A has a stinging sensation and eye irritation, indicating that Example 2 is safer. The refreshing skin feel and safety indicate that Example 2 is more suitable for use as a wash-free product.

[0099] The most preferred milk cap makeup remover is Example 2, which contains the following components in weight percentage: oil 40.00%, emulsifier 0.80%, humectant 4.00%, skin conditioner 6.00%, antioxidant 0.25%. The oil is isododecane; the emulsifier is polyglyceryl-10 laurate, and the humectants used are glycerin and pentylene glycol.

[0100] By adopting the technical solution of the present invention, a milk cap makeup remover with high makeup removal efficiency, wash-free, light and non-greasy skin feel can be prepared, and the makeup removal efficiency is higher than that of commercially available product A; it is more gentle on the eyes than commercially available product A. It has more excellent stability than commercially available product A. Moreover, the high addition amount of oil can also reduce the friction between the makeup remover wipe and the skin and avoid friction irritation. The high addition amount of the skin conditioner can make the product have the effects of moisturizing, soothing and repairing.

[0101] The milk cap makeup remover of the present invention also contains oils. Lightweight and safe oils such as squalane, isododecane, or triglyceride (ethylhexanoate) are used. Polyglyceryl-10 laurate or olive oil PEG-7 esters are used as emulsifiers. Through the ingenious combination of emulsifiers and oils, a milk cap appearance with an upper layer of emulsion and a lower layer of aqueous solution can be formed. On the one hand, it has a sense of freshness and fun in use; on the other hand, by further screening the combination of emulsifiers and oils, the oils can be quickly removed from the face under the action of emulsifiers after dissolving makeup, avoiding a greasy skin feel and secondary cleansing. Further, by directly loading the milk cap makeup remover on a membrane cloth to prepare a makeup remover wipe, it can further provide convenience for outdoor makeup removal. On the one hand, the safety of the makeup remover is strictly controlled; on the other hand, the introduction of oils reduces the friction between the membrane cloth and the skin and reduces the physical damage of the membrane cloth to the skin. The two work together to create a safe and wash-free makeup remover wipe.

[0102] For the milk cap makeup remover of the present invention, the selected polyglyceryl-10 laurate is a 100% PEG-free non-ionic emulsifier, which is of all-plant origin, mild and non-irritating to the skin, and suitable for baby care products. The selected olive oil PEG-7 esters are water-soluble olive oils with the efficacy of moisturizing and restoring the sebum barrier, which are safe and mild and can effectively reduce the irritating factors in the formula. It is safer than traditional emulsifiers such as PEG-40 hydrogenated castor oil, laureth sulfate, PEG-40 glyceryl cocoate, sodium laureth sulfate, and caprylyl / capryl amidopropyl betaine. On this basis, skin conditioners with soothing and repairing effects are added to further protect the skin from irritation during makeup removal.

[0103] Those of ordinary skill in the art in this technical field should recognize that the above embodiments are only used to illustrate the present invention and are not intended to limit the present invention. As long as it is within the scope of the spirit of the present invention, changes and modifications to the above embodiments will fall within the scope of the claims of the present invention.

Claims

1. A milk-cover makeup remover, which is a water-oil double-layer makeup remover, the upper layer is a milky white makeup remover emulsion, the lower layer is makeup remover water, and the two layers are clearly defined. It is characterized by: The milk cap makeup remover comprises the following components in percentage by weight: The emulsifier is polyglyceryl-10 laurate or olive oil PEG-7 ester; The mass ratio of the emulsifier to the oil is (1:20)-(1:60).

2. A milk cap makeup remover according to claim 1, characterized in that: When the emulsifier is polyglyceryl-10 laurate, the oil is at least one of 10-50% isohexadecane and 10-30% squalane; When the emulsifier is olive oil PEG-7 ester, the oil is 10-30% tri(ethylhexanoic acid)glycerol.

3. A milk cap makeup remover according to claim 1, characterized in that: The moisturizing agent is at least one of glycerin, pentylene glycol, butylene glycol, glyceryl polyether-26 and betaine.

4. The milk cap makeup remover according to claim 1, characterized in that: The skin conditioning agent is at least one of purslane extract, sapodilla extract, oldenlandia diffusa extract, locust flower extract and sea water.

5. The milk cap makeup remover according to claim 1, characterized in that: The antioxidant is p-hydroxyacetophenone.

6. A method for preparing the milk cap makeup remover according to claim 1, characterized in that: The following steps are involved: S1, adding an emulsifier, a moisturizer, a skin conditioner and an antioxidant into water and mixing them evenly to obtain a mixed solution; S2, homogenizing and mixing the mixed solution obtained in step S1 with oil, and letting it stand until the water and emulsion separate into layers, thereby obtaining a milk cap makeup remover.

7. A milk-cover makeup-removing towel, characterized in that: The invention comprises a membrane cloth and the milk cap makeup remover as claimed in claim 1 loaded thereon.

8. A method for preparing the milk cover makeup removing towel as claimed in claim 7, characterized in that: The following steps are involved: First, a milk cap makeup remover is prepared by the preparation method as claimed in claim 6; then the milk cap makeup remover is shaken until it becomes a uniform emulsion, and loaded on a film cloth and sealed in a film bag to obtain a makeup remover towel.

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